Later, this man, enshrouded in latex, comes in to their bedroom. She thinks it's her husband, but he's preoccupied in another room of this dastardly house. The two have sex--she thinking it's her husband. As viewers, we haven't a clue who the dude in the latex is, but he knocks her up and the couple, slowly falling back in love with one another, each believe he (the husband) did it, for different reasons of course.
American Horror Story is kinky, creepy, downright scary TV. Don't worry if you've missed any. You can watch full episodes on FX's website. Right now. Spanking is fun, but scary kink is hot.